Factor VIIIa Activity Assay Kit (Fluorometric)

The coagulation Factor VIII, also known as anti-hemophilic factor (AHF) is a vital blood-clotting protein. Factor VIII circulates in the bloodstream as an inactive protein, bound to a large multimeric glycoprotein called von Willebrand factor (VWF). Upon an injury to the blood vessel, VWF dissociates from FVIII and releases the active form of FVIII (FVIIIa). In the presence of calcium ions and negatively charged membrane phospholipids, activated factor VIII (FVIIIa) then binds to the activated Factor IX (FIXa) and proteolytically activates factor X (FX) to factor Xa (FXa). BioVision’s Factor VIIIa Activity Assay kit is based on the ability of FVIIIa to generate FXa. The generated FXa proteolytically cleaves a synthetic substrate and releases a fluorophore, AMC, which can be easily quantified by fluorescence microplate reader. The assay is simple, rapid and can detect activity as low as 1 ng of FVIIIa in a variety of samples.

• Detection method: Fluorescence (Ex/Em = 360/450 nm) • Applications: : Determine activity of pure FVIIIa : Detect activity of FVIIIa in plasma, and serum

• Convenient, and rapid • The assay can detect activity as low as 1 ng of FVIIIa in a variety of samples.

factor VIIIa, fVIIIa

none

• FVIIIa Assay Buffer • FXa Substrate-AMC • Enzyme Mix I • Enzyme Mix II • Phospholipids • FVIIIa Enzyme Standard (2.6 µg)

-20°C

gel pack

12 months

see datasheet

• Determine activity of pure FVIIIa • Detect activity of FVIIIa in plasma, and serum

• Purified enzyme • Serum, plasma

Biovision supplies other types of Assays as 1.

Aplha, transcription related growth factors and stimulating factors or repressing nuclear factors are complex subunits of proteins involved in cell differentiation. Complex subunit associated factors are involved in hybridoma growth, Eosinohils, eritroid proliferation and derived from promotor binding stimulating subunits on the DNA binding complex. NFKB 105 subunit for example is a polypetide gene enhancer of genes in B cells.